JPS55149582A - Dropout correction unit - Google Patents

Dropout correction unit

Info

Publication number
JPS55149582A
JPS55149582A JP5768079A JP5768079A JPS55149582A JP S55149582 A JPS55149582 A JP S55149582A JP 5768079 A JP5768079 A JP 5768079A JP 5768079 A JP5768079 A JP 5768079A JP S55149582 A JPS55149582 A JP S55149582A
Authority
JP
Japan
Prior art keywords
signal
dropout
video signal
correction unit
excess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5768079A
Other languages
Japanese (ja)
Inventor
Yuji Miki
Tsutomu Hikita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP5768079A priority Critical patent/JPS55149582A/en
Publication of JPS55149582A publication Critical patent/JPS55149582A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/94—Signal drop-out compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To releave the dropout, by holding the signal section immediately before the production of dropout, with the sample hold means. CONSTITUTION:The signal in excess of the white dropout level LW or black dropout level LB is detected among the video signal SB. The dropout detection signal SS is obtained from the signal in excess of the levels LW, LB. At the period present of the signal SS, the video signal is in hold. The video signal held releaves the dropout. Thus, since the switching operation in case of replacement of 1H delay signal is not required, the lowering of the reproduced quality by means of the switching is not incurred.
JP5768079A 1979-05-10 1979-05-10 Dropout correction unit Pending JPS55149582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5768079A JPS55149582A (en) 1979-05-10 1979-05-10 Dropout correction unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5768079A JPS55149582A (en) 1979-05-10 1979-05-10 Dropout correction unit

Publications (1)

Publication Number Publication Date
JPS55149582A true JPS55149582A (en) 1980-11-20

Family

ID=13062636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5768079A Pending JPS55149582A (en) 1979-05-10 1979-05-10 Dropout correction unit

Country Status (1)

Country Link
JP (1) JPS55149582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369892A2 (en) * 1988-11-18 1990-05-23 Sony Corporation Dropout detecting circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369892A2 (en) * 1988-11-18 1990-05-23 Sony Corporation Dropout detecting circuit

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